diff --git a/openbsc/src/nat/bsc_filter.c b/openbsc/src/nat/bsc_filter.c
index 8f79f00..3e92abd 100644
--- a/openbsc/src/nat/bsc_filter.c
+++ b/openbsc/src/nat/bsc_filter.c
@@ -22,6 +22,7 @@
  */
 
 #include <openbsc/bsc_nat.h>
+#include <openbsc/bsc_nat_sccp.h>
 #include <openbsc/ipaccess.h>
 #include <openbsc/debug.h>